Results 121 to 130 of about 30,865 (351)

Temporal Dynamics of Parkinson's Disease Tremor: Clinical and Neuroimaging Insights

Movement Disorders, EarlyView.
Abstract Background Parkinson's disease (PD) is a progressive neurodegenerative disorder clinically defined by three cardinal motor symptoms: bradykinesia, rigidity, and tremor. Although the natural history of bradykinesia and rigidity is well described, the evolution of tremor as the disease progresses remains controversial. Objectives The goal was to
Melanie Suette, Robert Matic, Marisa Koini, Lukas Gattermeyer‐Kell, Daniela Kern, Petra Katschnig‐Winter, Mariella Koegl, Maximilian Sackl, Christian Tinauer, Birgit Helmlinger, Manuel Leitner, Stefan Ropele, Daniela Pinter, Christian Enzinger, Stephan Seiler, Petra Schwingenschuh   +15 more
wiley   +1 more source

Design of Hall power supply based on full bridge half bridge switching digital LLC resonant converter

Dianzi Jishu Yingyong
A power processing unit suitable for Hall electric propulsion systems is designed to meet the high input voltage requirements of space missions such as deep space exploration.
Xu Tinghao, Wang Shaoning, Liu Aohui
doaj   +1 more source

Design and optimization of three-phase LLC resonant DC/DC converter [PDF]

The purpose of this study is to discuss the design and optimization of three-phase LLC resonant DCDC converter. This study aims to optimize the three-phase LLC resonant DCDC converter.
Liu, Zikang
core  

Absolute Quantification of Brain Deuterium Metabolic Imaging in Healthy Volunteers and Glioblastoma Patients at 7T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose We present a method for absolute quantification of deuterated metabolites in vivo at 7T. We describe acquisition protocols and an analysis pipeline compatible with 7T Terra MRIs. We apply them using a 2H/1H receive array in healthy volunteers and glioblastoma patients.
Jabrane Karkouri, Masha Novoselova, Sarah Miller, Minghao Zhang, Alexandra Constantinou, Carina Graf, Özlem Ipek, Daniel Atkinson, Brandon Tramm, Scott Schillak, Richard Mair, Kevin Brindle, Christopher T. Rodgers   +12 more
wiley   +1 more source

Topology Selection of LLC Resonant Converter Applied in PETT

Kongzhi Yu Xinxi Jishu, 2017
LLC resonant converter is the key part of power electronic traction transformer (PETT), and the choice of its topology is critical. It analyzed the LLC resonant converter with symmetrical half bridge, asymmetrical half bridge and full bridge structure ...
CHEN Jiang, LIU Huadong, HUANG Zihao
doaj  

Analysis, Design and Construction of an LLC Resonant Converter [PDF]

, 2016
The trend in DC/DC converters development is toward higher frequency, power density and efficiency. The traditional hard-switched converter is limited in switching frequency and power density.
Pu, Shi
core  

Optimized Detection of Left Ventricular Hyperpolarized [1‐13C]Pyruvate Signal in Human Cardiac Metabolic Imaging

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This study aimed to improve the analysis of the left ventricular (LV) blood pool hyperpolarized [1‐13C]pyruvate signal for a more reliable quantification of downstream metabolic outcome. Methods Hyperpolarized [1‐13C]pyruvate magnetic resonance spectroscopic images were acquired dynamically at 3 Tesla in 106 participants (NCT03685175).
Fatemeh Khashami, Ivan E. Dimitrov, Maximilian Fuetterer, Stefan Glöggler, Bei Zhang, Egzona Tan, Sebastian Kozerke, Anke Henning, Tarique Hussain, Craig R. Malloy, Nisha Unni, Vlad G. Zaha, CTOX Trial Investigator(s), Sheeba Cantanelli, Isaac Chan, Suzanne Cole, Suzanne Conzen, Glenda Delgado, Deborah Farr, Joshua Gruber, Barbara Haley, Dawn Klemow, Jenny Li, Heather McArthur, Alka Mallik, Poorni Manohar, Ina Patel, Namrata Peswani, Sangeetha Reddy, Navid Sadeghi, Samira Syed   +30 more
wiley   +1 more source

On the Origin of the Brain Semi‐Heavy Water Deuterium MR Signal Following Administration of Deuterated Metabolic Substrate: A Cautionary Tale

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the extent to which the appearance of HOD in the brain following systemic administration of a deuterated substrate is due to local brain metabolism versus body metabolism. Methods [6,6‐2H2]glucose, which is transported across the blood‐brain barrier (BBB), and [6,6‐2H2]fructose (Fruc), which does not cross the BBB, were ...
Joseph J. H. Ackerman, Xia Ge, Nick Rensing, Jeffrey J. Neil, Liu Lin Thio, Joel R. Garbow   +5 more
wiley   +1 more source

Multiphase LLC DC-Link Converter with Current Equalization Based on CM Voltage-Controlled Capacitor

Energies
In this study, a current-equalization technology utilizing a variable-capacitance technique for a multiphase inductor–inductor–capacitor (LLC) converter is studied.
Yue-Lin Lee, Kuo-Ing Hwu
doaj   +1 more source

All‐sky assimilation impacts of the Tomorrow.io microwave sounder constellation on global weather forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Key Findings: An assimilation methodology is established for the Tomorrow.io microwave sounder (TMS) flying on CubeSats in sun‐synchronous and inclined orbits, and in all cloud scenes. The TMS has a significant impact on weather forecast lead times up to 3 days in the Tropics in a research‐quality numerical weather prediction setting, and yields water ...
Jonathan J. Guerrette, Ryan Honeyager, Stephen Joseph Munchak, Xiaoxu Tian   +3 more
wiley   +1 more source